Pre-war - Other

General

The main change is between the 1925 and the 9/26 manuals and is on page 43 where:-
The 'Triangle of Forces' was deleted and replaced by three new mechanisms - SM.279-SM.281

An easy way to identify a manual which is missing its covers is by the 'Particulars and Prices of Meccano Parts' on pages 45/6. Details are as follows:-

• 1925 edition
  The four columns of the parts list were as follows:-
  1-23, 24-61, 62-104, 105-149
  The pictures of parts were not split into categories
• 9/26 edition (differences from 1925 edition)
  The four columns of the parts list were as follows:-
  1-23, 24-61, 62-104, 105-149
  The pictures of parts were now split into categories
  The heading 'Pulley Wheels' above part 19c was removed
  Parts 34a, 90a, 97a, 99b, 100a, 111c added
  Part 27b was renamed
  Part 37 - 7/32" added to the description
  A note was added to the bottom of the page saying that some parts were now available in either colour or nickel
• 1/27 edition (differences from 9/26 edition)
  The four columns of the parts list were as follows:-
  1-23, 24-61, 62-104, 105-149
  The heading 'Pulley Wheels' above part 19c was reinstated
  Parts 142a, 142b added
  Part 34a deleted
• 3/28 edition (differences from 1/27 edition)
  The four columns of the parts list were as follows:-
  1-36, 36a-82, 89-126, 126a-170
  The pictures of the parts were redrawn with new parts added - eg 167
  Parts 25a, 26a,30a,30c, 36b, 56c, 89a, 116a, 138a & 150-170 added
  The note at the bottom of the page changed to say parts would be supplied in colour unless nickel was specially ordered
• 7/28 edition (differences from 3/28 edition)
  The four columns of the parts list were as follows:-
  1-36a, 36b-82, 89-126a, 127-170
  Parts 56d, 56f, 161 added
• 11/28 edition (differences from 7/28 edition)
  The four columns of the parts list were as follows:-
  1-36a, 36b-82, 89-126a, 127-170
  Part 130 - 'Triple Throw Eccentric' renamed as 'Eccentric Triple Throw'
  Part 170 - 'Eccentric 1/2" Throw' renamed as 'Eccentric Single Throw'

1925

• There was a small sticker onside the front cover saying that the figs 2 & 3 on page 6 had been swapped over

9/26 (differences from 1925 edition)

• Page 2 - Text amendment - '...with worm and wheel stearing...' » 'with 'Ackermann' steering gear...'
• Page 2 : Contents - 'Experiments in Applied Mechanics' » 'The Inclined Plane'
• Page 3 : SM.5 - Text amendment
• Page 4 : SM.19 - Text amendment
• Page 5 : 'Friction in Pulley' - Text amendment
• Page 5 : 'Example 1' - Text amendment
• Page 6 - The figures for figs 2 & 3 swapped over to correct an error
• Page 8 - Last paragraph - Text amendment
• Page 14 : 'Levers in Drawbridge' - Text amendment
• Page 16 : SM.62 - Spelling of 'pivotally' corrected
• Page 25 : SM.104 - Text amendment
• Page 25 : SM.106 - Spelling of 'pivotally' corrected
• Page 26 - Text amendment
• Page 43 - The 'Triangle of Forces' was deleted and replaced by three new mechanisms - SM.279-SM.281
• Page 44 - 'No.2 Inclined Plane' » 'The Inclined Plane'
• Page 45/6 - See above for changes to the Meccano Parts list
• Page 47 - Index changed to reflect the changes on page 43. Also a number of corrections/amendments made
• Page 48 - Overseas rates for the Meccano Magazine added
• IRC:-
  Meccano Accumulator (4V 20A) added
  Hornby Set List revised
  The note at the bottom of the page saying that the prices were for the home market only was removed.
• Rear Cover - The four agents details were changed from a single column to a diamond shape (i.e a 1-2-1 arrangement) the NZ agent was Browning, Ifwersen Ltd.

1/27 (differences from 9/26 edition)

• Page 3 : SM.2 - '57' moved from the 1st to the 2nd lines
• Page 37 : SM.254 - Text amendment
• Page 45/6 - See above for changes to the Meccano Parts list
• Page 47 - The was a sticker giving revised prices for the Hornby Sets (Is this present in all manuals?)
• Page 48 - The UK cost of the Meccano Magazine goes up to 8/- for 12 months - The Overseas rates were removed
• IRC - The three Series M Hornby Train Sets changed from No.1 » No.M1 / No.2 » No.M2 / No.3 » No.M3

3/28 (differences from 1/27 edition)

• Page 1 - 200 parts » 246 parts
• Page 1 - The picture of the Meccano Motor Chassis changed to the new version
• Page 4 : SM.20 - Text amendment
• Page 6 : Example 1 - Model No.709 » Model No.7.9
• Page 9 : SM.33-35 - Text amendment
• Page 9 : SM36 - 'This may be used in place of part No.153' - added
• Page 10 : SM.41 - Model No.727 » Model No.6.25
• Page 14 : Fig.18 - Model No.65 » Model No.00.70
• Page 14 : 'Levers in Platform Scales' - Text amendment
• Page 14 : Fig.19 & 'Levers in Drawbridge' - Model No.642 » Model No.6.36
• Page 15 : Fig.20 - Text 'Model No.24' deleted
• Page 15 : Model No.430 » Model No.4.1, Model No.609 » Model No.6.9, Model No.52 » Model No.1.56
• Page 16 : SM.62 - Spring (extracted from Spring Buffer) » Compression spring 120B
• Page 17 : SM.65 - Spring (extracted from Spring Buffer) » Compression spring 120B
• Page 28 : SM.132 - Model No.624 » Model No.6.22
• Page 29 : SM.133 - Model No.724 » Model No.6.26
• Page 34 : SM.168 - Model No.703 » Model No.6.3
• Page 34 : SM.170 - Model No.707 » Model No.6.7
• Page 40 : SM.270 - Spring (extracted from Spring Buffer) » Compression spring 120B
• Page 40 : SM.270 - Extra sentance added at the end
• Page 40 : SM.273 - Model No.439 » Model No.4.35
• Page 41 : SM.295 - Text amendment
• Page 45/6 - See above for changes to the Meccano Parts list
• Page 48 - Page completely revised - (Now has a picture of a boy reading the MM at the top middle of the page)
• IRC - Page reformatted - The Meccano Accessories and Motors are now listed separately underneath the Outfits
• Rear Cover:-
  'Printed in England' added at the bottom of the page
  The NZ agents are now 'Models Limited'

7/28 (differences from 3/28 edition)

• Page 1 - 246 parts » 252 parts
• Page 14 : Fig.18 - Model No.00.70 » Model No.00.68
• Page 38 : SM.261 - Text amendment
• Page 45/6 - See above for changes to the Meccano Parts list

11/28 (differences from 7/28 edition)

• Page 3 : SM.4 - ½" and 1½" Bevel Gears added
• Page 45/6 - See above for changes to the Meccano Parts list
• IRC:-
  The Hornby 'Dover Pullman' » 'Continental Pullman'
  The three 'Metropolitan' train sets were moved to the bottom of the second column (previously been underneath the No.2 Passenger Set)